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DRV8834RGER

TIDRV8834RGER

Texas Instruments
Lower-current TI stepper driver option for compact, low-power stepper applications.
NRND7,867 in stock
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Overview

The DRV8834RGER is a dual H-bridge motor driver designed for low-voltage stepper or DC motor applications, operating between 2.5V and 10.8V. It features an integrated indexer for simple STEP/DIRECTION control and supports microstepping up to 1/32 step resolution. This driver is particularly suited for battery-powered systems due to its ultra-low 9.6 uA sleep current and small 4x4 mm VQFN package.

Why Choose This Part

The primary advantage is its wide low-voltage range (2.5V to 10.8V), which allows operation from single-cell Li-ion or AA battery stacks without a boost converter. It provides flexible control options through either STEP/DIRECTION or PHASE/ENABLE interfaces. Integrated safety features like overcurrent protection, thermal shutdown, and undervoltage lockout ensure robust operation in industrial environments.

Applications

Battery-Powered Medical Devices
Utilizes the low 2.5V minimum supply voltage and high-efficiency sleep mode for portable infusion pumps and diagnostic equipment.
Compact Security Cameras
Provides smooth, quiet pan-tilt-zoom (PTZ) control using 1/32 microstepping in a space-constrained VQFN footprint.
Electronic Point of Sale (ePOS)
Drives small thermal printers and receipt cutters requiring reliable current regulation up to 1.5A continuous output.
Handheld Scanners
Manages small stepper motors for optical focus mechanisms in mobile inventory management tools.

Key Specifications

Function Driver - Fully Integrated, Control and Power Stage
Interface Logic
Technology Power MOSFET
Applications General Purpose
Mounting Type Surface Mount
Package / Case 24-VFQFN Exposed Pad
Voltage - Load 2.5V ~ 10.8V
Step Resolution 1 ~ 1/32
Current - Output 1.5A
Voltage - Supply 2.5V ~ 10.8V
Motor Type - AC, DC Brushed DC
Motor Type - Stepper Bipolar
Output Configuration Half Bridge (4)
Operating Temperature -40degC ~ 150degC (TJ)
Supplier Device Package 24-VQFN (4x4)

Getting Started

Evaluate performance using the DRV8834EVM evaluation module, which includes a graphical user interface for tuning decay modes and current limits. Designers must set the VREF analog voltage to define the peak winding current and select the decay mode (Fast, Slow, or Mixed) based on the specific motor's inductance and speed requirements. Ensure the exposed thermal pad of the VQFN package is soldered to a large ground plane for optimal heat dissipation.

DRV8834 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
DRV8834RGER (this part) VFQFN-24 7,867
DRV8834PWPR PowerTSSOP-24 1,269

Also Consider

TMC2208 Trinamic - Features StealthChop technology for applications requiring near-silent stepper motor operation.